97 Town Car

Ford Crown Victoria, Mercury Grand Marquis, Mercury Marauder
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Joined: September 23rd, 2018, 12:07 pm

97 Town Car

Post by kitt1993 » April 7th, 2019, 8:34 pm


I got PO402 EGR Flow excessive at idle. The car also has a prolong start all of a sudden as well, and a smell of exhaust fumes from under car near driver door. I've seen PO401 many times on the older style intakes and just cleaning the ports and issue solved. Not sure where to look for a definite cause. Would you best guess on the EGR valve, vacuum solenoid or DPFE? I put a small hose on the EGR with engine running and was sucking and pushing air. Engine didn't die. I figured it would.

Would appreciate any and all advise,
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Re: 97 Town Car

Post by BigMerc96 » April 30th, 2019, 8:33 am

DPFE is suspect. '97 would have th old style that was failure prone.
2006 Audi A6: 129k miles, stock.
1998 Grand Marquis LS HPP: 98k miles, slowly becoming less stock.
1997 Lincoln Town Car Cartier: 148k miles, not stock, rusting into pieces.
1996 Grand Marquis GS: 117k miles, not stock. *RIP 7/14/12* :(
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